Steam-furnace-regulating system.



N. B. JOHNSON.

STEAM FURNACE REGULATING SYSTEM.

APPLICATION FILED AUG.I0. 1914.

Patented Oct. 19, 1915.

2 SHEETS-SHEET I.

N. B. JOHNSON.

STEAM FURNACE REGULAIING SYSTEM.

APPLICATION FILED AUG.10,. I914. 1,157,003 r v Patented Oct. 19, 1915.

' 2 SHEETS-SHEET 2.

OFFICE..-

NELSON B. JOHNSON, "OF WEBSTER, MASSACHUSETTS.

STEAMJlIRNACEREGULATING SYSTEM.

To all whom it may concern: I

Be it known that I, NELSON B. JoHNsoN,

a citizen of the United States, residing at Webster, county of Worcester, and State of Massachusetts, have invented a new and useful Steam-Furnace-Regulating System, of which the following is'the specification.

vThe object of this 'inventionis to provide a device that with a very low steam pres-' sure will efiectively govern combustion of fuel under, and steam generation in, boilers used for heating purposes so thatsteam heating system'sas below specified can be used. V

My invention makes it unnecessary to use automatically closing valves for liberating air from radiatihg'surfac'e. In itsstead an always open vent can be .used. The use of openvents 'to liberate air fromradiating surface reatly facilitates heating inasmuch the latter being suflicient to heat any build- "as the slightest pressure of steam generated in boiler above atmospheric pressure will:

.liberate' air .from radiating surface uni- V formly,'not leaving one radiating unit cold" when others are heated. In other words, uniform heating is sure to take place. When the generation of steam in boiler issuflicient to entirely fill-radiation, absolute air re moval in radiating surface takes place greatly increasing heating efii'ciency. When radiating surface is completely filled'with steam, a fine jet of vapor is discharged from open: vents. This acts as a humidifying sys- 5 tically noiselessly discharged.

tem which is very beneficial to health. This fine .jet of vapor can bedischarged against heated radiating surface -making same invisible-and under a pressure of steam from one to twoand one-half..oz.at'boiler is prac- The advantages that heating systems havingthis invention to govern combustion of fuel and steam generation in boilers are as follows 'Absolute uniformity oflheating. .Every. heating unit .filled with steam if desired. Absolutely noiseless. Radiating surface can besturned on or ofl" without. interv fering witli' circulation of steam always beunder complete balance. 'Will not ho d water from condensation back in radieting surface. or

water-from air relie vents. If'sufiicient quantity of fuel is maintained andfire kept clean under boiler, uniform pressure is main tamed of from a fraction of one oz. to one and one-half oz. maxlmum steam pressure.

.When one and one half oz. pressure has been reached, if this device piping or discharge.

has been balanced to making this one and one-half oz. maximum pressure, a complete working ofacombina- -tion of dampers has taken place effectively, closmg'a damper governing air to the fire and another damper governing the products of combustion from the fire. This in turn governs steam generating temperature in boiler. Complete checking of combustion under boiler does not take place unless entire Patented 0 19, 1915..

Raise-Urn radiating surface open to entrance of steam is completely filled and heated.

This device will work combination of dampers allowing enough combustion of fuel and steam generating temperature in boiler to offset condensation of steam inradiating surface; steam pressure never exceeding more than what device is balanced to maintain which has been found to be from one oz. to two and one half oz. steam pressure,

.ing suitable for gravity. return of water from condensation to boiler. p

Having thus described the object and ad- ;.'vantages of this invention, I will refer to the accompanying drawing, in which,

. Figure 1 is. a vertical secti onal drawing showing this .steam controlling device. Fig( 2 is a side-view of the deviceandtheifure naceto which it is attached, showing also a part of a radiator connected therewith;

andjFig. 3 is a side view of one'of-the parts i of the radiator with the open vent shown partly in section.

. The mai'n'portion of this device is made up of two receptacles, letter (M) representing the outer repectacle and letter (L) the P) represents casing for steam is spaced'from outside receptacle ('M). It

' will be also noted that this space is occupied byfa water-seal or other suitableliquid. It will also be noted that this water-seal or other liquid extends up inside of inner re-' ceptacle (L) -to a level of the height of steam supply pipe -"(S), this being its overflow point as will beseen. When steam en-. ters pipe (S) from boiler and enters inner receptacle (L) above waterseal, a pressure 4 of steam in inside receptacle (L) above water seal takes place as before stated of from 1 oz. to 2% oz. or whatever pressure this device is balanced to maintain to work a complete combination of dampers as before explained; As pressure increases in inside receptacle (L) liquid seal is forced downward. Thisin turn raises liquid seal V in outer receptacle (M) in space between inner and outer receptacle, this causing a resistance which causes inner receptacle to rise and thereby working regulating lever (D) which in, turn works the different chain connections that are attached to damper rod (D) at point marked(C), device being .bal

anced to maintain certain pressures by weights (A). These weights resting on car-- rier (B), inner receptacle as pressure increases continues to rise and is guided in its ascent by casting (K) and guides (H).

Damper rod (1)) is fastened to uide casting (K) which-is riveted to top inside receptacle (L) and also held by hinge (I) for damper rod (1)). passing through same and fastened. with nut (J) as will be seen by re-,

ferring to drawing. v Damper. rod (D) is pivotedto flexible linl: (F). Thisin turn ispivoted to clip" (E) of hanger (G) as will be seen. When maximum pressure in inner receptacle (L) has taken place and inner receptacle has doors or any other portion of steamgeneratreached'its maximum height on guide (I-I), steam check (V) is lifted up into seat (0) thereby nearly closing off steam supply, just allowing steam enough to enter inside receptacle (L) to' allow for condensation taking place. from blowing out liquid seal, should draft ing device that governs'the combustion of fuel be left open control.

It will'be notedthat no condensation of steam can take place that enters pipe (S) as inside of easing (P) is'spaced from pipe 3 (S) as will be seen. This forms a dead air space and no conduction can takeplace. It will be noted that casing (P) is made tight to bottom of outside receptacle (M) with packing between the two parts shown by letter (Q). This casing is held tight bylock-nut (R) which is screwed'onto steam supply pipe (S) and against bottom of outside receptacle (M) holding casing (P) and its difierent, connections rigidly in place as will be seen. Steam check (V) .is flexibly connected with rod (N). Rod (N) in turn is flexibly connected with nut (J) as will be seen. This'allows for a little variation should casing (P) and seat (0) be not quite plumb so that no binding can take place. i

In fastening up' this device-hanger (G) is made fast to some portion of timbers or' otherwise above boiler. Then guides (H) This prevents steam pressure that this device cannot I of inside receptacle L).

place, air is admitted bubbling 'throu hare inserted into hanger (G) that has been made fast as before stated and lock-nuts that are shown screwed up. This securely holds will ascend nearly its entire distance on.

guides (H) with but very slight increase in pressure,'thereby very effectively working any desired combination of dampers that Wlll completely check combustion of fuel and steam generation without having to balance these dampers so fine that the slightest collection of soot or other substances would render same inoperative. In other words, this device with slight pressure as aforesaid can be made powerful enough to lift considerable weight which isan important object of the invention, also being such as to require practically no attention.

Another feature of this device is,should controlling device be checking steam genoration either wholly or partly and should steam generationin boiler not be suflicient 'to keep up a supply of steam in inside working'receptacle (L) a vacuum will take place in inside receptacle (L) in steam space of same above water seal. This .will cause considerable agitation of liquid seal, atmospheric pressure causing liquid seal to be forced downward in outside re-.

ceptaclej and forcing same to nearly fill inside receptacle. The reason that a vacuum can'be formed in inside receptacle (L) when steam' supply is not sufficient to keep inside receptacle (L') filled With'steam' without a vacuum bein formed in steam boiler, is that the con ensmg of steam 1n lnside r .sptacle (L); takes place almost instantaneously causing water or liquid seal to immediately be forced upward by atmospheric pressure, this causing some water to be discharged'into steam supplypip'e (S) and as there is now a vacuum inside receptacle (L) this holding water discharged into supply pipe-(8)1 in the form of a plug in same, thereby not admitting any air or vapor to enter from steam boiler. This vacuum,

however", does not hold long as 1i uid' seal is forced to fill inside receptacle L), this lowering water or li uid seal below bottom When this takes water inside ofreceptacle (L)fwhich fi ls the vacuum and water or liquid seal falls back again to its natural position enough surface of inside receptacle (L) according to the number of square inches exposed in the top surface and the number of inches of depth ofwater or liquid seal, This adds a downward force many times greater than the weight of inside receptacle (L) causing dampers to be opened immediately. It

is obvious that this feature is veryiinpor tant as not the, weight only of receptacle (L) is depended upon to open dampers.

I After this device has been installed and filled with water, if this is used for sealing same, no further attention is required asthe condensation of steam will keep this device' filled to a point shown by the dotted linesin drawing, as all these advantages that are herein specified have been observed from practical observation of .this device in actual use. 1

The radiator W is shown as provided with an open vent device in the form of a tube X extending from one of the radiator sections and having at its end a cap Y provided with an inclined vent opening Z.

' -This vent opening is always open and is ini so ' one-half ounces at the boiler, the discharge clined toward the heated radiating surface of the adjacent radiator section W so as to discharge afine jet of steam against that surface.

This makes the jet invisible and, under a pressure of from one to two and is practically noiseless. By the use of this open vent the lightest'pressure of steam generated in the boiler aboveatmospheric pres sure will liberate the air from the radiating surfaces uniformily; In this way one radiating unit cannot be left cold when othersare heated and uniform heating throughout the system is necessary.

When the generation of steam in the boiler is suflicient to entirely fill the open radiators the air is absolutely removed from all the radiating surfaces by this device, thus greatly increasing the heating efficiency. Under these conditions a fine jet of vapor is discharged from the open vent and in addition to the advantages just mentioned itacts as a humidifying system introducing moisture into the otherwise dry air which is very beneficial to the health. Furthermore, it makes a room comfortable at a lower temperature than wouldbe the case withperfectly dry heat.

Although I have illustrated and described I only a' single embodiment of the invention,

WhatIdoclaimisr'. a

1. In. a device for-regulating a steam heat 'ing furnace, the combination of a receptacle,

an open bottom receptacle vertically movinner receptacle, a lever connected with the inner receptacle, and means for-connecting the lever with the dampers of the furnace.

2. In a device for regulating a steam heat? ing furnace, the combination of a receptacle, an open bottom receptacle vertically mov able therein, said receptacles having a liquid seal therein, means for introducing steam from the steam space of the boiler of the furnace to be regulated into the interior of the inner receptacle, means connected with said inner receptacle for' operating .the dampers of the furnace as the inner receptacle moves, and means for stopping the entrance of steam into the inner receptacle when the inner receptacle rises to a predeterminedheight. v a

3. Ina device for regulating a steam heating furnace, the combination of a receptacle, an open bottom receptacle vertically-movable therein, said receptacles having a liquid seal therein, means for introducing steam from the steam space of the boiler of the furnace to be regulated into-the in- "ing furnace, the combination of a receptacle, an open bottom receptacle vertically movable therein, said receptacles having a liquid seal therein, means for introducing steam from the steam space of the boiler of the furnace to be regulated into the interior of the inner receptacle, a .port through which I the steam enters said inner receptacle, said port having a valve seat, and a valve for nearly closing saidport movable with the inner receptacle.

5. In a device for .regulating a steam heating furnace, the combination of a receptacle, an open bottom receptacle verti-' cally movable therein, said receptacles hav ing a liquid seal therein, means for introducing steam from the steam space of the boiler of the furnace to be regulated into the interior of the inner receptacle, a port through which the steam enters said inner receptacle, said port having a valve seat, and a valve for said port, flexibly connected with the topof said inner receptacle.

6. In a device for regulating a steam heating furnace, the combination of an open top receptacle, an open bottom receptacle vertically movable therein, said receptacles having a liquid seal therein, a steam pipe from the boiler of the furnace to be regulated entering the bottom of the outer receptacle and extending up therein, and constituting the overflow for the liquid seal, and a casing surrounding said pipe and spaced therefrom to furnish a dead air space, to prevent excessive condensation in the steam pipe.

7. In a device for regulating a steam heating furnace, the combination of an open top receptacle, an open bottom receptacle vertically movable therein, said receptacles having a liquid seal therein, means for introducing steam from the boiler of the furnace to be regulated into the interior of the inner receptacle, a hanger above the receptacles having vertical guides for said inner receptacle, and stops on said guides for supporting the inner receptacle in its lowermost position. v A

8. In a device for regulating a steam heating furnace, the combination of an open top receptacle, an open bottom receptacle vertically movable therein, said receptacles having a liquid seal therein, means for introducing steam from the boiler of the furnace to be regulated into the interior of the inv with,

ner receptacle, a hanger above the receptacles having vertical guides for said inner receptacle, and a lever for connecting said inner receptacle with the dampers of the furnace to be regulated, said lever being supported by said hanger.

9. In a device for regulating a steam heating furnace, the combination of an open top receptacle, an open bottom receptacle vertically movable therein, said receptacles having a liquid seal therein, means for introducing steam from the boiler of the furnace to be regulated into the interior of the inner receptacle, a port through which the steam enters the inner receptacle, and a valve. for closing said port when the inner receptacle rises, said valve being connected with the inner receptacle and movable thereand being removable upwardly through said port.

' In testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses, this twenty-second day of June, nineteen hundred and fourteen;

NELSON B. JOHNSON.

Witnesses:

RITA LEEDHAM, ADELINA P. JONAKOWSKI. 

